FS-7912 add session UUID to embedded language (lua, javascript, etc) logs when session sanity check fails

FS-7906: [mod_av] correct crash from multithreaded opening or closing of multiple files at the same time

Merge pull request #375 in FS/freeswitch from ~CRIENZO/freeswitch:fs-7912-add-session-uuid-to-lua-errors to master

* commit 'a0b53d06':
  FS-7912 add session UUID to lua error logs, if known.

add var=val member lookup usable wherver member_id is valid in api commands
add bgimg to layouts with api command or config for global setting
fix bug with overlap layouts combined with odd sized layers
improve switch_img_fit to take a modifier for fit, streach or both at once

* commit 'f55ac436':
  FS-7677 handle packet loss
  FS-7519 FS-7677 trying to add H263 support FS-7519 FS-7677 fix key frame parsing and add some debug logs be verbose about invalid dimensions cleanup and refactor encoder params

* commit '1d7a4968':
  Allow JSON API commands to send third arg for muting

* commit 'ba9c44bb':
  FS-7885 Add getcputime command

FS-7519 FS-7677 fix key frame parsing and add some debug logs
be verbose about invalid dimensions
cleanup and refactor encoder params

FS-7889: [mod_conference] move conference chat to use an event channel so messages only go to the right 'room' for the conference

The mod_conference API supports passing an optional third arg for all
mute commands (mute, unmute, tmute, vmute, unvmute, tvmute). This patch
adds support for the optional third arg to the JSON API.

FS-7882 #resolve

* commit 'adb5f0d2':
  FS-7130 make /run/freeswitch persistent, so it will start under systemd